A stray is a person--male or female--who is neither straight nor gay. A stray lives in a g(r)ay area of sexuality and shows allegiance to neither team. A stray will deny being "bisexual" or "gay" or even "straight". Strays roam and wander between sexual preferences; they are without a home.
Ted is such a stray. He brought Cindy home for Christmas, but by New Year's Eve, he was hot and heavy with Jim.